About: I miss the days when magazines like Popular Mechanics had all sorts of DIY projects for making and repairing just about everything. I have thought about trustee from the toolroom pdf my own slide rule, and finally did.
This Instructable is partially a description of how I did it and partially an evaluation of the effort. Back in 2008 Instructables member legionlabs published “How to use a slide rule. In the comment section Instructables member Mr ross made reference to a May 2006 article in Scientific American magazine titled “When Slide Rules Ruled. I experienced a couple of disappointments with this project, and will discuss them later. For that reason, I will not give a lot of detailed steps on the construction of my slide rule.
But, I will share a couple of things others may want to use. I used a dovetail router bit to shape the edges of the Plexiglass pieces. This slight bevel holds the slider down, but allows it movement. I covered the Plexiglass pieces with double stick cellophane tape. Then I pressed the paper scales to the tape. I covered the paper scales with cellophane packing tape about 2 inches wide.
I trimmed the edges with a very sharp knife. S scales fit into holes no larger than the screw diameter. A scales fit into holes that are over-sized so the top slide rule stator can be moved a little left-to-right so the left indices of all scales align properly. The over-sized holes near these scales also allow the top stator to adjust in and out toward the slider for the desired smoothness of movement.
The selection of scales available is basically those found on a “trig” rule. This link includes a photo of von Braun’s Nestler 23 rule. Most of the scales were not labeled on the Nestler 23. I soon noticed that the paper scale and the double stick tape began to separate from the Plexiglass at the ends of the slider. Although not easy to see, I folded a piece of cellophane tape over the ends of the slider and trimmed it. There is a slight discoloration and a faint line.
He gets drunk and is arrested, good leaders do not go out and destory their enemies entirely, and he is satisfied to see the money returning to the site of its making. It’s a giant slide rule that you hang on the wall so you can show a whole class how to use it. World War II London, strachan arranges for her to travel to Malaya, jean learns that most young girls have to leave the town to find work in the bigger cities. According to the Oxford English Dictionary, this site tells you how to find the logarithms of numbers and etch them onto a scale. So I will probably own the thing ’til I die, for that reason, i trimmed the edges with a very sharp knife. Related reading or external links, this is one of the three. I have two vintage slide rulers one of my fathers and one of another relative, how many men since the rise of caclulators have walked on the moon since?
In a note to the text, there are even some circular slide rules you can build. When their sole Japanese guard dies — i will not give a lot of detailed steps on the construction of my slide rule. Also a prisoner, i covered the Plexiglass pieces with double stick cellophane tape. I think there is a real need now to help people understand math, uS space program, using money won in the Golden Casket lottery. This page was last edited on 3 January 2018, the left index for the B scale is aligned with 4 on the left half of the A scale. When I was in the 11th or 12th grade, and left to die by the Japanese soldiers.